Japan
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
143km²
Area
80km
Coastline
584m
Highest point
Mount Kamui
2,498
People
22°C
Warmest sea
August
366km
To the mainland
When to go to Okushiri Island
Best for the beach in August.
The sea is warmest in August (22 °C) and coolest in February (7 °C). Comfortable swimming (21 °C or more): from August to September.
Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.
Island in Japan, Hokkaido, Hiyama Subprefecture
Okushiri Island is an island in Japan. It belongs to Japanese archipelago. It covers 143 km², with 80 km of coastline. Its highest point, Mount Kamui, rises to 584 m. About 2,498 people live on it. The nearest mainland is 366 km away.
Getting there
- Okushiri Airport (OIR)airport on the island, with scheduled flightsCar hire at HKD airport (Hakodate)Discover Cars · Affiliate link↗
- FerriesEsashi - Okushiri Island
- 366 km from the mainlanddistance to the nearest continental coast
- Augustbest months to go (from 30 years of averages)
Plan the trip
Ferries, stays and things to do
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
On the island
What you find on Okushiri Island.
- 2beaches
- 2lighthouses
- 1ferry terminals
- 2marinas
- 3named peaksKamui Yama
- 1waterfalls
- 1ruins and archaeological sites
- 3campsites
- 1hotels, guesthouses and apartments
- 7restaurants, cafés and bars
Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.
Cross-checked with our atlases
Okushiri Island in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Okushiri Island, each with its own numbers.
3beaches and covesCoastya
6mountainsPeakyas
1waterfallCascadyas
Highest point
584m
Mount Kamui
prominence 584 m · according to Peakyas
Beach with the warmest sea
22.6°C
Naga Hama
sea in the warmest month · according to Coastya
3 beaches
on Coastya, the beach atlas
- Naga Hama22.6°C
- Senjō Hama22.5°C
- Kaitorimacove22.5°C
6 mountains
on Peakyas, the mountain atlas
- Mount Kamuiprominence 584 m584m
- Mount Katsuma428m
- Hoya-ishi
- Tsurikake-yama
- Kyūjima-yama
- Katsuma-yama
1 waterfalls
on Cascadyas, the waterfall atlas
- Hoyaishino-taki
Cascadyas is coming soonOpen Cascadyas ↗
The shape of the land.
On average the island stands 213 m above the sea. 48 % of it is below 200 m.
- 10 %0–50 m
- 37 %50–200 m
- 50 %200–500 m
- 2 %500–1,000 m
Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).
Size, for real
Next to islands you may know.
10 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Okushiri2,410 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 2 | 2 | 5 | 8 | 12 | 16 | 21 | 24 | 22 | 16 | 10 | 4 |
| Night low (°C) | 0 | 0 | 2 | 6 | 10 | 15 | 19 | 22 | 20 | 14 | 7 | 2 |
| Sea (°C) | 8 | 7 | 7 | 8 | 11 | 15 | 19 | 22 | 22 | 18 | 14 | 10 |
| Rain (mm) | 103 | 83 | 70 | 74 | 86 | 78 | 124 | 151 | 131 | 110 | 126 | 125 |
| Wet days | 23 | 18 | 14 | 11 | 12 | 11 | 14 | 15 | 15 | 15 | 18 | 22 |
| Sun h/day | 1.0 | 2.4 | 4.9 | 6.4 | 6.1 | 5.4 | 4.5 | 5.7 | 5.9 | 4.6 | 1.9 | 0.8 |
| Wind (km/h) | 33 | 31 | 29 | 24 | 20 | 16 | 17 | 18 | 20 | 26 | 30 | 33 |
Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.
Recent years
Warmer and cooler years at sea.
Each month's sea temperature compared with its 1991–2020 average, in degrees.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | ±0.0 | +0.5 | +1.2 | +0.7 | +0.7 | +0.6 | +1.1 | −0.6 | +1.2 | +0.9 | −0.7 | ±0.0 |
| 2021 | +0.1 | +0.6 | +0.8 | +0.9 | +0.9 | +0.7 | +1.9 | +0.6 | −0.1 | +1.3 | +1.6 | +2.6 |
| 2022 | +1.8 | −0.1 | +0.8 | +0.7 | +1.0 | +1.2 | +1.0 | +1.0 | +0.7 | +1.4 | +1.9 | +2.4 |
| 2023 | +2.0 | +2.4 | +1.8 | +1.9 | +2.2 | +2.6 | +1.7 | +2.6 | +2.9 | +1.2 | +2.1 | +3.0 |
| 2024 | +2.9 | +2.2 | +0.3 | +0.9 | +0.6 | −0.2 | −0.3 | +0.2 | +0.5 | −0.3 | −0.2 | +1.2 |
| 2025 | +1.9 | +2.9 | +1.6 | +1.1 | +1.9 | +1.0 | +3.6 | +3.3 | +1.8 | +2.0 | −0.8 | +0.7 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
About these numbers
| Names, area, population | Wikidata (Q675101) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Beaches, mountains, lakes and waterfalls | Coastya, Peakyas, Cascadyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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